Who owns GREAT LAKES DREDGE & DOCK CO, from the filings themselves: stakes over 5% (Schedule 13D/G), the institutional managers reporting the stock each quarter (13F), and the funds holding it (N-PORT).
Investors crossing 5% ownership must disclose it. Schedule 13G filers certify the stake is passive; Schedule 13D is the general form for everyone else — founders, strategic holders, and activists alike. Each entry is the holder's most recent disclosure. Coverage begins with SEC's structured filings from December 18, 2024; a holder appears once they file or amend after that date.
Harvey Partners, LLC: 0.9% · 610,000 shares
PRUDENTIAL FINANCIAL INC: 1.8% · 1,226,033 shares
Every institutional manager whose latest 13F reports this stock, largest position first. "% of their portfolio" is the weight inside that manager's own book — how much conviction the position represents; "% of company" is how much of GREAT LAKES DREDGE & DOCK CO they hold.
| Investor | Position value | Shares | % of their portfolio | % of company | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. | $101M | 5,917,589 | 0.00% | — | March 31, 2026 |
| DIMENSIONAL FUND ADVISORS LP | $57.6M | 3,386,372 | 0.01% | — | March 31, 2026 |
276 more institutional holders behind a free account
See every manager reporting GREAT LAKES DREDGE & DOCK CO, how much of the company they hold, and how big the position is inside their own portfolio.
Sign up freeFunds disclosing this stock in their monthly N-PORT portfolio, with the position's share of the fund's net assets.
| Fund | Position value | % of net assets | % of company | As of |
|---|---|---|---|---|
| Avantis U.S. Small Cap Value ETF | $40.4M | 0.17% | — | February 28, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND | $34.5M | 0.00% | — | March 31, 2026 |
227 more funds behind a free account
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